KR950002733B1 - Boring machine for clay type ground - Google Patents

Abstract

The method is for boring perforatimg and enlarging the holes in the weak ground i.e. seashore or clay layer by simultaneously assembling a number of boring tools. The method comprises the steps of; tearing down the clay layer by spraying a high pressure water under the pressure of 100-500 Kg/cm2 by use of a number of nozzles; crushing the clay earth while crushing the earth, and then discharging the crushed earth; covering a cylindriacal weight by preventing the vibration of the boring equipment caused by the high pressure water; forming a number of radial shaped branch holes by connecting the hole boring equipments, and strengthening the earth base by pouring mortar into the holes.

Description

Viscous soil perforation and expansion method

1 shows a schematic perspective view of a drilling device for carrying out the method of the invention.

2 is a front sectional view of a drilling apparatus as an embodiment of the present invention.

3 is a bottom view of the upper first view.

Figure 4 is a bottom view showing an example of the surface state of the impeller for viscous earth grinding according to the present invention.

5 is an operation explanatory diagram as an embodiment of the present invention.

6 is a combination state of multiple workers can be punched simultaneously by the present invention.

7 is a working state diagram of the present invention using a bar-branch line.

* Explanation of symbols for main parts of the drawings

1: device frame body 1 ': radial device frame

2: high pressure water distribution box 3: viscous soil grinding impeller

4: prime mover 5: injection nozzle (nozzle perpendicular to ground)

6: spray nozzle (nozzle inclined to the ground) 7: high pressure water flow passage

8: support 9: high pressure water suction pipe

10: viscous soil and wastewater discharge pipe 11: impeller central axis

12: vertical axis for the prime mover and impeller support 13: projection

15: load weight 15 ': load control filler

16: high pressure water pump 17: water tank

18: separation tank 19: barge

20: girl 21: ground (clay)

22: ground and improved ground after drilling and expansion 23: lifting device

24: drilling and injection pump system 25: silo

26: underwater anchor 27: offshore structures

28: Soft ground improvement section

Field of invention

The present invention relates to viscous soil perforation and expansion methods with beach tidal flats, sandy beaches, and other similar grounds. In particular, the present invention relates to a viscous soil perforation and diameter expansion method that enables the drilling and expansion of viscous soils efficiently and economically by combining a plurality of perforation devices at the same time.

Conventionally, the drilling and expansion methods used to drill viscous soils such as beach tidal flats include simple drilling and expansion methods using a large drill.

Challenges to the Invention

However, the above-described conventional drilling method using a drill or the like should use a heavy drill device, but cannot use a combination of a plurality of heavy drills at the same time, and in particular, the drilling speed is generally slow to 30 to 60 r.pm, and even deeper. The more the hole is drilled to the point, the longer the drilling rod is, the more the drilling efficiency is reduced, and the larger the eccentricity when the drill is rotated, so that the shape, size, and verticality of the drilled hole cannot be obtained. There was also a problem in the environment.

Accordingly, an object of the present invention is to solve the above-mentioned problems and to provide a viscous soil perforation and expansion method that does not involve pollution or mess in the working environment, and also allows the use of a plurality of punchers simultaneously.

Disclosure of Invention

The present invention sprays the high pressure water of about 100 ~ 500Kg / ㎠ to the soft ground, in particular to the target ground such as viscous soil to perforate the ground and discharge the soil and water dug or collapsed in the perforated part by this perforation, thereby forming The present invention relates to a method of drilling and expanding the viscosity to inject cement, mortar and hardener into the holes to solidify the ground.

That is, the present invention is based on the use of both a method of drilling and expanding vertically to the ground of the viscous soil and a method of drilling and expanding inclined to the ground, and in the case of the former, drilling a radially (normally cross-shaped) portion at the center. And in the latter case, the core is first recessed and the earth and sand of the recessed portion are lifted by a high-speed rotation with a viscous earth crushing impeller, and then drilled and enlarged to be dug by a centrifugal force.

In this way, when an annular perforation is formed in the center, and radial (normally cross) perforations are simultaneously formed around the center, a ground improving agent (such as a ground hardener) is added to these perforations as shown in FIG. Therefore, it is possible to firmly improve the viscous soils so that sea breakwaters, other viscous soils, and buildings on improved viscous soils are possible.

The drilling and expanding apparatus used in carrying out the method of the present invention comprises a radially sealed hollow frame equipped with a spray nozzle for spraying the high pressure water approximately vertically connected to the ground of the viscous soil, and also the viscous soil ground. Equipped with a nozzle to inject high pressure water inclined approximately to the ground of the machine, and the inside is hollow so that high pressure water of 100 ~ 500Kg / cm ² flows, but all parts except high pressure water inlet part such as high pressure water dispenser The hollow body frame which is connected to the radial frame which is enclosed and integrally connected, and the high pressure water distribution box installed on the upper part of the frame, the suction and discharge mechanism of the high pressure water and the viscous earth grinding mechanism, To do the work.

That is, in the method of drilling and expanding the viscous soil cut off, the radially radial frame having a conical or polygonal hollow wall cut upward and a hollow wall integrally connected to the frame body and installed in contact with the ground. And a high pressure water flowing from above the frame by a plurality of spray nozzles inclined to the ground below the frame body and a plurality of spray nozzles mounted on the bottom of the radial frame perpendicular to the ground. 100-500Kg / ㎠ spraying on the viscous soil to perforate, enlarge and tear down, and also the drive unit supported by the support attached to the frame body in the inner space of the frame body and the viscous earth grinding for rotating by this drive unit An impeller digs out soil drilled and broken down by the inclined plurality of spray nozzles. While finely pulverizing, discharged out of the viscous earth drilling and expansion device by the discharge port together with the waste water, and put a cylindrical load weight to fix and fix the vibration soil due to the high pressure water around the viscous earth drilling and the expansion device. And the ground is improved by hardener and mortar injection by forming a plurality of central holes and a plurality of branch holes which are radially extended from the central holes and are simply connected to each other by combining a plurality of viscous perforations and expansion devices. It is a viscous earth perforation and expansion method, and the viscous earth perforation and expansion operation is a viscous earth perforation and expansion method to be performed using a bar-branch line.

Best Example

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 shows a schematic attempt of an apparatus for carrying out drilling and expanding work as one embodiment of the present invention.

2 is a front sectional view of an apparatus for performing drilling and dilatation operations as one embodiment of the present invention.

3 is a front view of FIG. 1,

4 is an operation explanatory diagram on a barge as an embodiment of the present invention.

5 is an explanatory view of the combination of the work holes when drilling a plurality of holes at the same time according to the present invention.

As shown in FIG. 1, a perforated machine is installed on the ground by a predetermined number at a suitable distance from the target ground 20 to be perforated, and the high pressure water suction pipe 9 and the high pressure connected to the high pressure water distributor 2 on the upper part of the perforator The soil and wastewater drainage pipes 10 passing through the water vessel 2 are connected to the high pressure water pump 16 and the soil and wastewater storage tank or separation tank 18, respectively. Next, as shown in FIG. 2 from the high-pressure water distribution box 2, a hollow apparatus frame body 1 having a polygonal shape that is gradually expanded from the upper portion of the truncated cone to the lower portion thereof and the third from the lower portion from the frame body 1 As shown in the figure, the radially connected and extending device frame 1 'is connected to the hollow high-pressure water passage 7 and the lower surface of the device frame 1' is equipped with a spray nozzle 5 opposed to the ground, and the center of the lower portion of the frame body 1 The nozzle No. 6 is mounted inclined on the ground of the main body 1, and the actuator 4, the drive shaft 11 and the impeller 3 are vertically perpendicular to the ground in an approximately middle portion of the frame body 1, and the support shaft is fixed at one end on the bottom 2 of the high pressure water distributor. Supported by 12 or 8 on the horizontal axis. With the above-described frame 1, 1 'structure, the ground below the center of the device is shielded from the outside in the space within the device frame.

The impeller 3 for grinding viscous soil is grounded by a blade 12 which rotates the viscous soil of the ground so as to be retracted by the screw shaft 14 connected from the prime mover 4 and to be retractable by the opposite rotation or to be rotatable at a predetermined position. The projection 13 formed on the bottom face of the blade 12 makes it easier to work.

Next, as shown in FIG. 1 of the accompanying drawings, in order to suppress the reaction during the high-pressure water injection and the vibration according to the operation of the apparatus according to the present invention, a load weight 15 having a shape such as a drum can be installed in the frame 1,1 '. If the load weight 15 alone is not sufficient to suppress the vibration, a filling material, such as sand, earth or other metal-filled material, is filled between the weight weight 15 and the device frame body 1.

Prior to entering the work, when the above-described preparation is completed, a plurality of frames can be interconnected by the lifting and fixing fixing hangers 21 attached to the apparatus frame side to perform simultaneous work.

When working on tidal flats, etc., the apparatus used in the present invention will be used as it is, but when used on the shore, there are many times when there is a high tide or underwater work, so as shown in FIG. At the same time, all relevant equipment is placed on the magnetic branch line. Drills and expands a number of central holes 24 and narrow and long branched branching holes 23 on the ground, and this branching hole 23 and the boundary part 25 of adjacent branching holes 23 are overlapped and then drilled and enlarged. Ground hardening chemicals and mortar are added to block the holes and cure, forming a solid shield from the wave 19.

The present invention has a great feature of being able to perform many of the above-mentioned drilling operations at a time, because of the light weight and ease of operation and handling of the apparatus of the present invention.

Action and effect

According to the above-described configuration of the present invention, the high pressure water sucked at high pressure by the high pressure water pump 16 is introduced into the high pressure water distributor 2 from the water tank through the high pressure water suction pipe 9, and the high pressure water introduced is the high pressure water distribution port 2. It is supplied to each nozzle 5,6 through the hollow passageway of the hollow frame body 1 and the passage of the device example 1 'and sprayed to the ground at a pressure of 100-500Kg / cm ² , usually 200-400Kg / ㎠ The drilling operation is started. Of course, the adjustment of the high pressure water pressure regulates the injection pressure by adjusting the diameters of the injection nozzles 5 and 6 or replacing the nozzles having an appropriate diameter. High pressure water is injected from the spray nozzle 6 which is inclined with respect to the ground in the lower part of the frame body to the ground just below the impeller 3 for the viscous earth crushing which is located at the center of the apparatus on both sides. The centralized jetting method of a plurality of jetting nozzles 6 installed in the circumference causes viscous soils to form a plurality of inclined holes, which are then collapsed. Hence, the blades of the impeller 3 for viscous soil grinding are mixed together with agglomerated soils. When the soil is lifted by centrifugal force and the lump soil is pulverized, the pulverized soil and water are discharged through the hose under high pressure and sent to the wastewater separation tank so that there is no pollution.

According to the present invention, unlike the conventional heavy drill and the like, it is light, easy to move and handle, the drilling speed is extremely fast, and moreover, the present invention has a breakthrough effect that is unprecedented at home and abroad because of the advantage that it can be used at a time by combining a plurality of drilling machines. Can be harvested. Furthermore, the present invention is extremely useful because it can work with less pollution of the surrounding environment in the discharge, deposition and other treatment of the soil as in the conventional method.

Claims (2)

A method of drilling and expanding cohesive soil comprising: a frame body having a hollow wall of a truncated conical shape or a polygon, and a radial frame having a hollow wall which is integrally connected to the frame body and installed in contact with the ground, 100 to 500 kg / h of high pressure water introduced from above the frame by the plurality of spray nozzles inclined to the ground in the lower portion of the frame body and a plurality of spray nozzles mounted on the bottom of the radial frame perpendicular to the ground. A driving unit supported by a support attached to the frame body in the inner space of the frame body and a viscous soil crushing impeller device rotated by the driving unit to perforate, enlarge and tear down the sprayed viscous soil in cm 2. More finely while digging up drilled and torn soil by multiple spray nozzles It is discharged out of the viscous perforation and expansion device by the discharge port together with the waste water, and the cylindrical load weight is put on the periphery of the viscous perforation and expansion device so as to be fixed and restrained from vibration due to the high pressure water. A viscous earth hole which can be improved by a hardener and mortar injection by forming a plurality of branch holes which are connected to the viscous earth hole and expansion device by connecting a plurality of central holes and radially extending from the central hole to be easily interconnected. And enlargement method. The method of claim 1, wherein the viscous soil perforation and expansion operation is performed using a bar-branch line.